Cleanup namespace usage in Source/web/Web[I-Z]*.cpp

Source/web/WebIDBDatabaseError.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "public/platform/WebIDBDatabaseError.h"
 
 #include "core/dom/DOMError.h"
 #include "public/platform/WebString.h"
 
-using namespace blink;
-
 namespace blink {
 
 void WebIDBDatabaseError::assign(const WebIDBDatabaseError& value)
 {
     m_private = value.m_private;
 }
 
 void WebIDBDatabaseError::assign(unsigned short code)
 {
     m_private = DOMError::create(code);
 }
 
 void WebIDBDatabaseError::assign(unsigned short code, const WebString& message)
 {
     m_private = DOMError::create(code, message);
 }
 
 void WebIDBDatabaseError::reset()
 {
     m_private.reset();
 }
 
 WebIDBDatabaseError::operator PassRefPtrWillBeRawPtr<DOMError>() const
 {
     return m_private.get();
 }
 
 } // namespace blink